That's certainly a possibility. Rojas, along with Bloss, Estrada, Manoah, Macko, Francis, Lucas, Pina... those are probably the guys fighting over the 4-10 spots in the rotation/depth chart in the coming seasons unless something changes (it probably will). Hell, half those guys are injured currently or just coming back from injury.
If I had to pick 3 of that list... yeah i'd probably go with Manoah, Rojas and Estrada as the guys that actually look like major league starters to some degree. The rest are just holding on to the "barely relevant" category due to current injury, just coming back from injury or just plain sucking in Buffalo.
The wildcard in there is Angel Bastardo who might recover enough to throw some innings this season, hopefully being buried in the minors for rehab without having to be added to the 40 man. Hopefully he can be a something down the road too if he can refine his command enough.